How are the carbon, nitrogen, and oxygen cycles similar

Well I'm not sure if my answer is correct though but in all these cycles it involves the replenishment of air in ecosystem depending on the organisms which use it.

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.

i don't know. if i were you, i would search it up online : d